<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    *{
			margin: 0;
			padding: 0;
		}
    .header{

        width: 970px;
        height: 111px;
        margin: 0 auto;
    }
    .logo{
        height: 103px;
        width: 277px;
        background-color: red;
        float: left;
    }
    .lc{
        width: 137px;
        height: 49px;
        background-color: green;
        margin-bottom: 8px;
        float: right;
    }
    .nav{
        width: 679px;
        height: 46px;
        margin-bottom: 8px;
        background-color: green;
        float: right;
    }
    .content{
        width: 970px;
        height: 435px;
        margin: 0 auto;
    }
    .ad{
        float: left;
        height: 435px;
        width: 310px;
        background-color: rgb(255,215,0);
    }
    .conright{
        float: right;
        height: 435px;
        width: 650px;
    }
    .cr1{
        height: 240px;
        width: 450px;
        float: left;
        background-color: rgb(135,207,235);
        margin-bottom: 10px;
    }

    .cr2{
        height: 400px;
        width: 190px;
        float: right;
        background-color: rgb(128,0,128);
        margin-bottom: 10px;

    }
    .cr3{
        height: 110px;
        width: 450px;
        float: left;
        background-color: rgb(135,207,235);
        margin-bottom: 10px;
    }
    .cr4{
        height: 30px;
        width: 450px;
        float: left;
        background-color: rgb(135,207,235);
    }
    .cr5{
        height: 25px;
        width: 650px; 
        background-color: rgb(27,0,255);
        float: left;
    }
    .bottom{
        height: 35px;
        width: 970px;
        background-color: rgb(218,165,32);
        margin: 0 auto;
        margin-top: 10px;
    }

</style>
<body>
    <div class="header">
    <div class="logo">logo</div>
    <div class="lc">语言选择</div>
    <div class="nav">导航条</div>
    </div>


    <div class="content">
    <div class="ad">大广告</div>        
    <div class="conright">
    <div class="cr1"></div>
    <div class="cr2"></div>
    <div class="cr3"></div>
    <div class="cr4"></div>  
    <div class="cr5"></div>
    </div><!-- conright end -->
    </div><!-- content end -->

    <div class="bottom"></div>
</body>
</html>